Archive.org has all volumes from your link:

- [tomes 1 & 2][1]
- [tomes 3 & 4][2]

This edition isn't stamped with a © copyright logo:

 - [***Sententiæ In IV Libris Distinctæ*** (3° ed.)][3]


  [1]: https://archive.org/details/libriivsententia01pete
  [2]: https://archive.org/details/libriivsententia02pete
  [3]: https://isidore.co/calibre#panel=book_list&search=authors:%22%3DLombardi%2C%20magistri%20Petri%20(Parisiensis%20episcopi)%22